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Jim,
I have never done this but, according to my manual:
Remove the tank, disconnect the air bleeder hoses between the TBs and the idle control valve at the cylinder head. Insert the hose T pieces between the TB/idle valve/vacuum analyzer. Somehow reconnect the tank, Triumph sells extension kits for the hose and electrical lines. The #1 cylinder is on the left. Set the adjusters so all TBs have equal vacuum. The adjusters are on the opposite side of the TBs from the bleeder hoses. Next one needs to check the Idle Air Control Valve (IACV) stepper position (diagnostic tool needed) to make sure it is between 25-35 steps. If not make equal changes to all three adjusters and recheck IACV stepper position. After all criteria is met check the idle speed, it should be 1200+- 50 RPM. If not adjust the closed throttle position, again using a diagnostic tool.
As I said I have never done this so there may be ways around using the diagnostic tools, I don't know.
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